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jeanray
Joined: 03 Oct 2008
Posts: 2
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 03 Oct 2008 12:51 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter sch? |
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I am searching for recent designs in DC/AC converter/inverter (Schematics).
The unit should be transformer-less and using solid state only (ICs, MOSFETs etc).
Unit should be supplied from batteries (12 or 24 or 48 V) and outputs 230VAC/60Hz with power ranging from 500W to 2kW.
Any schematics, advices, component manufacturers?
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fsmyth
Joined: 15 Nov 2004
Posts: 54
Helped: 1
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| 04 Oct 2008 1:04 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter sch? |
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| http://hmin.tripod.com/als/andysm/pages/pwrsupp9.html
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jeanray
Joined: 03 Oct 2008
Posts: 2
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| 04 Oct 2008 9:11 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter sch? |
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| Thank you very much! Do you know any transformer-less design?
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Johansen
Joined: 11 Feb 2008
Posts: 35
Helped: 3
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| 05 Oct 2008 9:06 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter sch? |
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| no one has ever made a transformer-less inverter.
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rauol
Joined: 02 Oct 2002
Posts: 364
Helped: 11
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| 05 Oct 2008 15:25 Re: 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter |
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Theoratically you can make a transformerless power supply, you will have to design high power charge pump voltage doublers/multipliers, then have a sineweighted full bridge to get the sine.
but the efficiancy you get may be less than 10-15% and will not be practicle
Generally transformer-less also means one without the use of low frequency Iron core based transformer, instead people us a high frequency transformer to boost the dc voltage to high voltage Dc and use a bridge and filter to convert it to AC
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ziaulislam
Joined: 14 Dec 2007
Posts: 47
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| 07 Oct 2008 18:03 Re: 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter |
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TRANSFORMER LESS INVERTER IS NOT PRACTICALLY POSSIBLE.
IF YOU WANT A SIMPLE DESIGN IT WILL NOT BE POSIBLE WITHOUT
BULKY 50 HZ IRON CORE TRANSFORMERS.
IF A WANT TO USE A FERRITE TRANSFORMER THEN THING WILL VERY
DIFFICULT TO HANDEL FOR A HOBBIEST (BECAUSE YOU’RE QUESTION
TELLS YOU ARE HOBBIES T OF BEGGING LEVEL)
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Johansen
Joined: 11 Feb 2008
Posts: 35
Helped: 3
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| 07 Oct 2008 22:27 Re: 12-24VDC to 230VAC/60Hz sine/trapezoidal 500W converter |
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| rauol wrote: |
Theoratically you can make a transformerless power supply, you will have to design high power charge pump voltage doublers/multipliers, then have a sineweighted full bridge to get the sine.
but the efficiancy you get may be less than 10-15% and will not be practicle
Generally transformer-less also means one without the use of low frequency Iron core based transformer, instead people us a high frequency transformer to boost the dc voltage to high voltage Dc and use a bridge and filter to convert it to AC |
Stop feeding the trolls.
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